20343001313 has 4 divisors (see below), whose sum is σ = 20477723328. Its totient is φ = 20208279300.

The previous prime is 20343001303. The next prime is 20343001369. The reversal of 20343001313 is 31310034302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20343001313 - 2⁴ = 20343001297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20343001303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67360781 + ... + 67361082.

It is an arithmetic number, because the mean of its divisors is an integer number (5119430832).

Almost surely, 2^20343001313 is an apocalyptic number.

It is an amenable number.

20343001313 is a deficient number, since it is larger than the sum of its proper divisors (134722015).

20343001313 is a wasteful number, since it uses less digits than its factorization.

20343001313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134722014.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20343001313 its reverse (31310034302), we get a palindrome (51653035615).

The spelling of 20343001313 in words is "twenty billion, three hundred forty-three million, one thousand, three hundred thirteen".